There is a lot of rubbish on here thats for sure. But it what people vote for that goes to the top. Or people voting to get votes from other people.
It's very hard to shift through the amount of post on here and you often miss the good content. There need to be a way of searching for subject areas more efficiently. I feel that people just scroll through the junk an vote because its there if their was a more structured way that posts were displayed then this might not occur and the junk would disappear down the feeds. I don't have a solution for this but I would enhance the platform no end :)